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A. 


CHART  OF  TYPICAL  FORMS 


OF 


OF  THE  TEETH, 


J 

By  Eugene  S.  Talbot,  M. 


D.,  D.  D.  S„ 


Professor  of  Dental  Surgery,  Woman’s  Medical  College;  Lecturer  on  Dental  Surgery  and  Pathology,  Rush 
Medical  College,  Chicago;  Author  of  “The  Irregularities  of  the  Teeth  and  their  Treatment;”  Honorary 
President  of  the  Dental  Section  of  the  Tenth  International  Medical  Congress,  Berlin,  1890; 
Member  of  the  American  Medical  Association;  Member  of  the  Chicago  Medical  Society; 

Fellow  of  the  Academy  of  Medicine,  Chicago;  Member  of  the  American  Dental  Asso¬ 
ciation;  Member  of  the  Illinois  State  Dental  Society;  Member  of  the  Chicago  Dental 
Club;  Honorary  Member  of  the  Odontologisehen  Gesellschaft,  Berlin,  Ger¬ 
many;  Honoraiy  Member  of  “  L’Odontclogie,”  Paris,  France,  etc.,  etc. 


PUBLISHED  BY 

The  AVilmino-ton  Dental  Manufacturing- Company, 

PHILADELPHIA. 


PREFACE. 

'I’he  object  of  publishing  this  work  is  to  illustrate  the  typical  forms  of  Constitutional  Irregularities  of  the  jaws 
and  teeth,  so  that  the  teacher  and  student  may  readily  comprehend  the  various  positions  which  the  jaws  and  teeth  may 
assume. 

Constitutional  irregularities  of  the  jaws  and  teeth  are  those  aberrations  of  development  of  those  parts  that  are 
formed  coincidently  with  the  development  of  the  general  osseous  system,  and  are  not  the  result  of  accident.  They 
are  produced  either  by  excessive  or  arrested  development  of  the  maxillary  bones. 

Deformities  of  the  jaw,  as  illustrated  by  i)lates  IX-XVl,  may  be  produced  also  by  a  local  cause,  viz.  :  the  for¬ 
ward  movement  of  the  first  permanent  molar,  which  places  the  jaw  in  the  same  condition  as  regards  size  as  would 
arrest  of  development.  The  manner  of  the  formation  of  each  variety  is  described  in  my  work  upon  “  Irregularities  of 
the  Teeth.” 

All  the  plates  were  made  from  drawings  and  models  by  the  author,  and  were  reproduced  in  colors  by  the  Sh'ober 
(S:  Cirqusville  Lithographing  Company,  Chicago,  Ill.  These  illustrations  are  typical,  and  are  accurate  representations 
of  cases  w'hich  have  occurred  in  the  practice  of  the  author  from  time  to  time  for  the  past  fifteen  years.  While  the 
general  outline  of  the  jaws  and  teeth  is  the  same,  in  no  two  cases  are  they  exactly  alike  in  detail. 

'rhese  forms  w'ere  selected  from  groui)s  which  w'ere  arranged  from  a  collection  of  three  thousand  models. 

These  forms  are  very  common  among  the  defective  classes,  such  as  the  idiotic,  deaf  and  dumb,  blind,  insane  and 
criminal  classes. 


THE  AUTHOR. 


PLATE  I. 


Illustrates  the  jaws  in  their  normal  position. 


PLATE  I 


PLATE  II. 


Illustrates  excessive  development  of  the  superior  maxilla,  and  arrest  of  development  of  the  body  and  rami  of  the 
inferior  maxilla.  When  the  second  molars  erupt,  the  anterior  teeth  separate,  owing  to  a  want  of  harmony  in  the 
development  of  the  jaws. 


PLATE  II 


PLATE  III. 


Illustrates  arrest  of  development  of  the  superior  maxilla,  and  the  rami  of  the  inferior  maxilla  and  excessive 
■development  of  the  body  of  the  jaw.  The  articulation  was  precisely  the  same  as  in  Plate  II,  but  the  powerful  lower 
jaw  and  the  muscles  have  overcome  the  weaker  superior  jaw  teeth  and  alveolar  process,  so  that  the  upper  alveolar 
2)rocess  and  teeth  are  forced  forward  until  the  articulation  is  complete. 


.m 


PLATE  III 


PLATE  I\L 


Illustrates  excessive  development  of  the  rami  of  the  inferior  maxilla.  The  body  of  the  jaw  is  carried  forward  and 
occlusion  is  possible  only  with  the  second  superior  molar,  and  the  third  inferior  molar  upon  the  right  side. 


PLATE  IV 


a.-J'--' 


■>  .T*',  •i'if-,  ,-  '  ■>.;• 


•U^i 


■i  '-Sa^ 

ii'' 

'  ^ 

;i^ 

PLATE  Y. 


Illustrates  arrest  of  development  of  the  inferior  maxilla. 


The  chin  recedes  to  such  an  extent  that  a  deformity 


produced. 


PLATE  Y 


Illustrates  arrest 
the  inferior  maxilla. 


PLATE  YI. 

of  development  of  the  rami,  which  is  compensated  for  by  excessive  development  of  the  body  of 
The  articulation  is  normal. 


PLATE  YII. 


Illustrates  excessive  development  of  the  superior  maxilla,  and  alveolar  process.  The  teeth  overlap  and  the  cutting 


edge  of  the  incisors  impinge  upon  the  gum  of  the  inferior  maxilla. 


The  inferior  maxilla  is  normal. 


PLATE  YII 


PLATE  YIIL 


Illustrates  arrest  of  development  of  the  superior  maxilla.  The  inferior  maxilla  is  normal,  with  excessive  develop¬ 
ment  of  the  anterior  alveolar  process.  The  inferior  incisors  impinge  upon  the  gum  of  the  superior  maxilla. 


4*^.  * 


VIII 


PLATE 


V 


PLATE  IX. 

The  V-shaped  arch. 


mm 


'irnfm 


^■F^  PLATE  IX 

yim^KSr. 


PLATE  X. 


The  partial  V-shaped  arch. 


- 


* 


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PLATE  XL 


The  semi  V-shaped  arch. 


PLATE  XI 


PLATE  XII. 


The  saddle-shaped  arch. 


PLATE 


XIV 


PLATE  XY. 

The  semi  V-  and  semi  saddle-shaped  arch  on  one  side,  and  die  semi  V-shaped  arch  on  the  other  side. 


fl 


IPs**- 


'f... 


PLATE  XT 


PLATE  XYI. 


The  semi  V-  and  semi  saddle-shaped  arch  on  one  side,  and  the  semi  saddle-shaped  arch  upon  the  other  side. 


PLATE  Ml 


